Add Readme to the helm chart

Author: baluchicken

charts/kafka-operator/README.md

@@ -0,0 +1,51 @@
+# Kafka-operator chart
+
+[Kafka-operator](https://github.com/banzaicloud/kafka-operator) is a Kubernetes operator to deploy and manage [Kafka](https://kafka.apache.org) resources for a Kubernetes cluster.
+
+## Prerequisites
+
+- Kubernetes 1.13.0+
+
+## Installing the chart
+
+To install the chart:
+
+```
+$ helm repo add banzaicloud-stable https://kubernetes-charts.banzaicloud.com
+$ helm install --name=kafka-operator --namespace=kafka banzaicloud-stable/kafka-operator
+```
+
+## Uninstalling the Chart
+
+To uninstall/delete the `kafka-operator` release:
+
+```
+$ helm delete --purge kafka-operator
+```
+
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Configuration
+
+The following table lists the configurable parameters of the Banzaicloud Kafka Operator chart and their default values.
+
+Parameter | Description | Default
+--------- | ----------- | -------
+`operator.image.repository` | Operator container image repository | `banzaicloud/kafka-operator`
+`operator.image.tag` | Operator container image tag | `0.6.0`
+`operator.image.pullPolicy` | Operator container image pull policy | `IfNotPresent`
+`operator.resources` | CPU/Memory resource requests/limits (YAML) | Memory: `128Mi/256Mi`, CPU: `100m/200m`
+`prometheusMetrics.enabled` | If true, use direct access for Prometheus metrics | `false`
+`prometheusMetrics.authProxy.enabled` | If true, use auth proxy for Prometheus metrics | `true`
+`prometheusMetrics.authProxy.image.repository` | Auth proxy container image repository | `gcr.io/kubebuilder/kube-rbac-proxy`
+`prometheusMetrics.authProxy.image.tag` | Auth proxy container image tag | `v0.4.0`
+`prometheusMetrics.authProxy.image.pullPolicy` | Auth proxy container image pull policy | `IfNotPresent`
+`rbac.enabled` | Create rbac service account and roles | `true`
+`imagePullSecrets` | Image pull secrets can be set | `[]`
+`replicaCount` | Operator replica count can be set | `1`
+`alertManager.enable` | AlertManager can be enabled | `true`
+`nodeSelector` | Operator pod node selector can be set | `{}`
+`tolerations` | Operator pod tolerations can be set | `[]`
+`affinity` | Operator pod affinity can be set | `{}`
+`nameOverride` | Release name can be overwritten | `""`
+`fullnameOverride` | Release full name can be overwritten | `""`